Switch



June 10 1924.

H. CONZELMANN SWITCH Filed Nov). 9, 192) Hg f ' casing'.

Puentes Julie 1o, 1924.

UNITED STATES Emma coNaELmANN, or-srur'rcm, GERMANY, AssIGNon. 'ro Bonner-noses AKTIENGESELLSCHAFT, or s'rcr'rcm, amm. Y

SWITCH. V

Application illedjovember, 1821. Serial No. [13.858,

To all whom it mag/001mm: Be it knownthat I, HrJNnxca 'CoNzsL- MANN, a citizen of Germany, residing at Stuttgart, Germany, have invented certain newr and useful Improvements in Switches, of which the following is a specification.

The present invention relates to a switch for electric installations, especially for electric ignition and lighting installations of power vehicles. There is, at the switch casinga handle which may assume several pos itions, and besides it a push button is provided. The switch handle mav serve. foi` instance, for throwing into. an out of, circuit va-V rious ignition devices or lamps or the like, A and the push button may' serve, for instance, for operating a starting electrmnotor or a starting ignition device or the like. v There are already switches known which have a push button located in the centre portion of theswitch handle, and there has also been provided for them a special detachable key .which in afccrtain position locks 'that handle and may then be drawn olf the switch The distinguishing differencefbetween these known switches and the novel one consists in 'the feature that the switch handle with the push button inserted into it may itself be drawn ofi' the switch csing, whereby, of course, the same protection against unauthorized use of the switch is offered as is done by the specially detachable locking key of the known switch; but this special key and the locking device is now dispensed with. Switches with a detachable handle are falso known, it is true, but no push-button is attached to them.

In torder to make my invention more clear, I refer to the accompanying drawing, in which Fig. lis a vertical section through a. switch constructed according to. this invention, and Fig. 2 is partly a plan and partly a vertical section through the circumfererb tial wall of the front portion of the casing, a portion of the front wall of the casing being broken away.

e and c nre contact plates of which the 'one is attachedto 'the bottom portion of the nvdr-)reusing and the other is attached to the top( portion of the same: theyco-operate with slip springs b aixed to a rotary member f' that may be actuated from the outside of the casing and adjusted to various positions. This rotary motion is effected by thc 'tact, handle meansdetachabl? a switch lever d, the central spindle f of which forms a kind of key which fits in to a correspondingly sha'ped central aperture of the member c.

ton h arranged in the body-portion of the handle` as shown.' Behind the ush button shaft is a contact plate i' attach to the bottom of .the casing; by pressing the button l: inwards against that plate' i a certain circuit is cl At a certain position of the switch handle, for instance in the position indicated by the O at the top of Fig.'2 the beard of the key formed by the spindle j may be drawn out The spindle f 1s hollow and .serves as guide for the shaft of a push butthrough a correspondingly shaped slot g provided in the mtnplatev of the switch casing;` in other words, the handle d with its push button h may then be drawn off that casing. Thishaving been done, it is extremely diflicult 'to turn the member c with the contact springs 5 orto establish an eleetric connection between-the contact plates e' 1 and i. It ifthus, practically, impossible for an unauthorized person to actuate the switch. Having now described my invention, what I claim as new and desire to secure by' Letters 'Patent of'the United States is:

1. A switch, especially for electric instailations of power vehicles, comprising, in

combination, a casing; stationary and moveable contacts in said casing, said movable contncts'being mounted for movement into and out of engagement with certain of said stationary contacts; a handle'adapted to be coupled with the movable contacts and to be detached from said casing; and a pushbutton in' said hand-le carrying a terminal adapted upon operation to engage one of `sad stationary contacts, for the purpose set forth` i 2. A. switch comprising, in combination,

a casing, a stationary contact enclosed within said casing, a movable contact mounted within s'aid casing for movement-into and out of engagement with said stationary con-v mounted through a wall of said casing a pted to be coupled with saidv movable contact and to be detached from said casing, a push-button carried by said handle means and detachable therewith from said casing, and snother stationary contact within said casing adapted to be engaged hy said pushbutton.

3. A switch comprising, in combination, a

handle means detachablyr mounte casing, stationary` said casin a movable contact mounted within sa' casing for movement intJo and out of engagement with a stationay contact,

through n wall of said casing adapted to be coupled with said movable contact and to be detached from said casing, e. movable contact piece carried by said handle means and detachable therewith from said casing and, adapted to engage one of said Astationary contacts.

4. A switch comprising, m combination, a casin t statlonary and movable contacts enclose within said casing, said movable con- 5 tacts mounted for movement into and out of 20 be detached from4 saidcasi engagement with certain of said stationary contacts, handle means detachably mounted through a wall of said casing, adapted to be coupled with said movable contacts and to and a pnshbutton carried by`said han le means norl mally out of engagement with said contacts within said casing and ada ted, upon operati'on to engage one of sai stationary contacts.

5. A switch comprising, in combination, a

easing, stationary cfmtac-ts enclosed within said casing7 a rotary member mounted within said casing adjacent a waii thereof movable contacts affixed to said member, handle i of . means for said rotary member, said member and handle means having) complementary arts 'formed to detacha lg: couple said handle means to said member for rotation the latter, said well. being e vertured to ried by said en de one of seid stationary contacts within sind casing.

contacts enclosed within 'said casing,

in said casing adjacent a wall thereof, movrmit said coup1i ng,an'd a push mtton can, banale means and adapted toK push button carried by s'aid handle means l and adapted withsaid handle means inserted to be operated into engagement with onepf said static i contacts.

7. A. switch comprising, in combination, a casing-stationary contacts enclosed within a, rotary member mounted withable contacts aixed Ato'snid rotary member, a-switch lever having o hollow spindle and key projections upon said; spindle, said wall and rotary member be' epertured for the insertion of seid spin e and said rotal member having keyws cooperating wit said key projections or rotation of said member, and a. push-butt1on mounted on 'said lever having a contact-bear' stem extending .throiglh said hollow spin e for engagement wi one -o'f said stationerycontacts. In testimony. whereof I have nixed my signature in presence of two witn HEmnIcH OONZELMANN. Witnesses z E. Scmmcnm, H. PANnnn. 

